Precious Asha still fighting fit |
This has confused me greatly as the DM test is new to us all and absolutely worth doing but I was under the impressions there where only three results possible, clear, carrier and affected. Clear and affected are self explanatory but that a carrier had one gene from one parent and is at low risk of developing the condition. Indeed a carrier can be bred from providing the partner has tested clear. This contradicts the results given to the bitches owner.
Last night I went on The KC site and found this ... "DM is a progressive disease of the spinal cord in older dogs. A recessive mutation that is linked with this disease has been identified. There is evidence that having two copies of this gene (one inherited from the mother and one from its father) is strongly associated with the development of DM. However, having two copies of the recessive mutant gene does not necessarily result in clinical disease and similarly an absence of the gene is not a guarantee that the condition will not occur.
• Two copies of the normal gene (“Clear”/ homozygous normal) – likely to be free of DM
• One copy of the mutant gene (“carrier”/ heterozygous) – low chance of developing the disease
• Two copies of the mutant gene (“affected”/homozygous affected) – high risk of developing DM"
That also confirms what I had been told but I looked further going onto Fitzpatrickreferrals page ..if you don't know who he is then shame on you .. lol
"Genetic testing is available through laboratories and breeding guidelines are available to identify dogs at risk of degenerative myelopathy. Test results identify dogs that are ‘clear’ i.e. the dog who is extremely unlikely to develop DM; those who are ‘carriers’ and are less likely to develop the disease and those who are ‘at risk’ of developing DM. It is important to understand this genetic test does NOT confirm degenerative myelopathy. In addition, some dogs that might be destined to develop the disease do not do so in their lifetime and pass away before getting degenerative myelopathy."
Here is a link to that page as it's well worth a read https://www.fitzpatrickreferrals.co.uk/neurology/canine-degenerative-myelopathy/?fbclid=IwAR2Wke7QFI-z0RYyZyvYCiWB1LRX8FggkT2bduPTJQPjnEmdxOYSH-jKd3A
An Old Finlay showing weakness in his hindquarters |
The test is so new that Sammi was not tested for it ... and neither was Merlot. But being used regularly Merlot has now been tested and is clear, so theoretically Kaiah and her brothers should not be affected .. they can only be clear or carriers. Kaiah will be tested before I breed from her, If Kaiah is a carrier then she must be mated to a clear dog .. and Zalu, the dog on the top of my list for her has been tested and is clear. I think I will also test Ross as it will give me an idea for the future.
Blade at the front - 1997 |
I wish Asha sister all the luck in the world and hope the conservative pain management and hydrotherapy give her the quality of life she deserves in the Autumn of her years and I thank her owners from the bottom of my heart for loving her so much and doing the very best by her.
Edited to add - A post on this blog about Finlay on the 30th of July 2015 I wrote ... "As we suspected Finlay has CDRM, which is a pain free, but degenerative and paralyzing condition of the nerve endings of the spine. The condition progresses at different speeds in different dogs, sometimes taking years, sometimes months to cause any real difficulty. Sadly I have come across it before, and watched Blade loose his mobility with it over his twilight years. Anyway Vet Jill stressed that we must carry on with the walking, she said do what your doing and then do a little more! Stopping is the worse thing you can do for CDRM, though the progression of the condition can not be stopped, it can be slowed down. Thankfully everything else is in good working order for his age so now we plod on and enjoy every day that we share together!"
It was only 13 months later that we lost a 13 year old Finlay - and though the condition was progressing as I said we lost him to an unrelated condition.